/*
* Copyright 2004 The Apache Software Foundation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
*     http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/

package javax.servlet;


import java.util.Enumeration;

/** 
*
* A filter configuration object used by a servlet container
* to pass information to a filter during initialization.
* @see Filter 
 * @since	Servlet 2.3
*
*/


public interface FilterConfig {

/** 
* Returns the filter-name of this filter as defined in the deployment descriptor. 
*/

public String getFilterName();


/**
* Returns a reference to the {@link ServletContext} in which the caller
* is executing.
*
*
* @return		a {@link ServletContext} object, used
*			by the caller to interact with its servlet 
*                  container
* 
* @see		ServletContext
*
*/

public ServletContext getServletContext();

/**
* Returns a <code>String</code> containing the value of the 
* named initialization parameter, or <code>null</code> if 
* the parameter does not exist.
*
* @param name	a <code>String</code> specifying the name
*			of the initialization parameter
*
* @return		a <code>String</code> containing the value 
*			of the initialization parameter
*
*/

public String getInitParameter(String name);


/**
* Returns the names of the filter's initialization parameters
* as an <code>Enumeration</code> of <code>String</code> objects, 
* or an empty <code>Enumeration</code> if the filter has
* no initialization parameters.
*
* @return		an <code>Enumeration</code> of <code>String</code> 
*			objects containing the names of the filter's 
*			initialization parameters
*
*
*
*/

public Enumeration getInitParameterNames();




}
